package com.jlc.book.shop.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class SessionValidatorFilter implements Filter{

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest hreq=(HttpServletRequest) request;
		String uri=hreq.getRequestURI();
		
		if(uri.endsWith("login.jlc")||uri.endsWith("register.jlc")||uri.endsWith("forgetPassword.jlc"))
		{
			
			chain.doFilter(request, response);
		}
		
		else
		{
			HttpSession session=hreq.getSession();
			
			if(session==null)
			{
				request.setAttribute("loginError", "Session timeout.Please login again");
				request.getRequestDispatcher("index.jsp").forward(request, response);
			}
			else
			{
				chain.doFilter(request, response);
			}
		}
		
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		
		
	}

	@Override
	public void destroy() {
		
		
	}
	
	

}
